![subject](/tpl/images/cats/himiya.png)
Chemistry, 29.10.2020 01:20 sweetcandy16gaming
An isotope of yttrium has 39 protons and 59 neutrons. What is the mass number of that isotope?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 00:20
What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 08:30
Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 09:00
Particles vibrate in a rigid structure and do not move relative to their neighbors.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 13:30
Table sugar completely dissolved in water is an example of a?
Answers: 1
You know the right answer?
An isotope of yttrium has 39 protons and 59 neutrons. What is the mass number of that isotope?...
Questions
![question](/tpl/images/cats/istoriya.png)
History, 22.10.2019 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.10.2019 14:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.10.2019 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.10.2019 14:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.10.2019 14:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 22.10.2019 14:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.10.2019 14:00
![question](/tpl/images/cats/biologiya.png)
Biology, 22.10.2019 14:00
![question](/tpl/images/cats/health.png)
Health, 22.10.2019 14:00